UNISONIC TECHNOLOGIES CO., LTD
79DXXAA
3 TERMINAL 1.5A NEGATIVE
VOLTAGE REGULATOR
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
79DXXAA
series of three-terminal negative
regulators is available several fixed output voltage, making them
useful in a wide range of application. Each type employs internal
current limiting, thermal shut-down, making it essentially
indestructible.
FEATURES
* Output current up to 1.5A
* -5V, -12V output voltage available
* Thermal overload protection
NORDERING INFORMATIO
Package
TO-251
TO-252
TO-252
Pin Assignment
1
2
3
G
I
O
G
I
O
G
I
O
Packing
Tube
Tube
Tape Reel
Ordering Number
Lead Free
Halogen Free
79DXXAAL-TM3-T
79DXXAAG-TM3-T
79DXXAAL-TN3-T
79DXXAAG-TN3-T
79DXXAAL-TN3-R
79DXXAAG-TN3-R
Note: Pin Assignment : G: GND I: Input O: Output
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QW-R101-042.B
79DXXAA
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
TO-251
TO-252
05:
-
5V
12:-12V
BLOCK DIAGRAM
GND
R
1
R
2
OUTPUT
Voltage
Reference
Protection
Circuitry
RSC
INPUT
Fig.1
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QW-R101-042.B
79DXXAA
ABSOLUTE MAXIMUM RATINGS
(T
A
=25C)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATING
UNIT
Input Voltage
V
IN
-35
V
Output Current
I
OUT
1.5
A
Power Dissipation
P
D
Internally Limited
W
Operating Temperature
T
OPR
0 ~ +125
C
Storage Temperature
T
STG
-65 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
SYMBOL
θ
JA
θ
JC
RATING
112
12.5
UNIT
C/W
C/W
PARAMETER
Junction to Ambient
Junction to Case
ELECTRICAL CHARACTERISTICS
(I
OUT
=0.5A, T
J
=0C~125C, C
I
=2.2uF, C
O
=1uF, unless otherwise specified)
For UTC 79D05AA
(V
IN
=-10V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
For UTC 79D12AA
(V
IN
=-18V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
TEST CONDITIONS
MIN
T
J
=25C -4.80
V
OUT
V
IN
=-7V~-20V
-4.75
I
OUT
=5mA~1.5A, P
D
≦
15W
V
D
I
OUT
=1.5A
T
J
=25C
T
J
=25C
V
IN
=-7V~-25V
V
OUT
V
IN
=-8V~-12V
T
J
=25C
T
J
=25C
I
OUT
=5mA~1.5A
V
OUT
I
OUT
=250mA~750mA
T
J
=25C
I
Q
T
J
=25C
eN
f=10Hz~100kHz
T
A
=25C
V
OUT
/T I
OUT
=5mA
RR
V
IN
=-8V~-18V, f=120Hz
54
I
PEAK
T
J
=25C
SYMBOL
V
OUT
V
D
V
OUT
V
OUT
I
Q
eN
V
OUT
/T
RR
I
PEAK
SYMBOL
TYP
-5.0
MAX
-5.20
-5.25
2
10
4
10
3
3
100
-0.4
60
2.2
100
50
100
50
6
UNIT
V
V
V
mV
mV
mV
mV
mA
μV
mV/C
dB
A
TEST CONDITIONS
MIN
TYP MAX UNIT
V
T
J
=25C -11.52 -12.0 -12.48
V
IN
=-14.5V~-27V,
-11.40
-12.60
V
I
OUT
=5mA~1.5A, P
D
≦
15W
I
OUT
=1.5A
T
J
=25C
2
V
V
IN
=-14.5V~-30V
T
J
=25C
12
240
mV
V
IN
=-16V~-22V
T
J
=25C
6
120
mV
I
OUT
=5mA~1.5A
T
J
=25C
12
240
mV
I
OUT
=250mA~750mA
T
J
=25C
4
120
mV
T
J
=25C
3
6
mA
f=10Hz~100kHz
T
a
=25C
200
μV
I
OUT
=5mA
-0.8
mV/C
V
IN
=-15V~-25V, f=120Hz
54
60
dB
T
J
=25C
2.2
A
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QW-R101-042.B
79DXXAA
APPLICATION CIRCUITS
-V
IN
LINEAR INTEGRATED CIRCUIT
2
UTC 79DXXAA 3
1
-V
OUT
C
I
2.2
μF
C
O
1
μF
Fig.1 Fixed output regulator
C
3
2.5
μF
C
I
2.2
μF
2
-V
IN
R
1
C
O
1
μF
1
R
2
-V
OUT
UTC 79DXXAA
3
Fig.2 Circuit for increasing output voltage
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R101-042.B
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